Printing mechanism



14, 1945- H. s. BEATTIE 2,381,852

PRINTING MECHANI SMS Filed March 10, 1944 5 Sheets-Sheet 1 M GENE ET ORT m Ai'TORNEY 8 H. s. BEATTIE 2,381,862

PRINTING MECHANISMS Filed March 10, 1944 5 Sheets-Sheet 2 FIG. 2

ATTORNEY 14, 1945- H. s. BEATTIE 2,381,862

PRINTING MECHANISMS Filed March 10, 1944 5 Sheets-Sheet 3 1945- H. s.BEATTIE PRINTING MECHANISMS 5 Sheets-Sheet 4 Fil ed March 10, 1944 wdEATTOZENEY Filed March 10, 1944 5 Sheets-Sheet 5 INVENTOR JGw I kc muQA'ToRNEY Patented Aug; 14, 1945 PRINTING MECHANISM Horace S. Beattie,East Orange, N. J., assignor to International Business MachinesCorporation, New York, N. Y., a corporation of New York ApplicationMarch 10, 1944; Serial No. 525,839 8 Claims. (cl. 101-93) This inventionrelates to printing machines and more particularly to the type in whichthe items entered in the machine are listed.

The main object of the invention resides in the provision of an improvedzero printing mechanism. It is the custom in punching record cards forcard controlled machines to place a perforation in each card column tominimize the risk of inadvertently omitting a significant digit and anycolumn in which no significant digit occurs is punched in the zeroposition. These zero perforations occur to the left of the firstsignificant digit at the left of a number as well as to the right of itbut in printing numbers consisting of digits of plural denominations, itis desirable to suppress the printing of all digits to the left of thefirst significant digit while automatically enabling the printing of allzeros to the right of this significant digit.

With this requirement understood, it will be seen that the main objectof the invention relates to automatic mechanism for eliminating zeroprinting in orders to the left of the significant digit and effectingzero printing for orders to the right of the significant digit Wheresuch orders represent zero.

A more specific object of the invention is toprovide an improvedelectrical control mechanism for zero printing which is flexible in itsarrangement for enabling printing at diiferent places on the recordstrip, such flexibility being preferably obtained by pluggingconnections.

A more specific object of the invention is to provide a zero printingmechanism in the type of printing mechanism in which the printingcarrier is bodily impressed against the platen for digit printing. Inthe preferred embodiment the digit is normally at the printing line. Theinvention is shown incorporated in the form of printing mechanisminwhich the printing control magnet causes, upon the card impulsedirected thereto, the differential movement of the type carrying memberto select a digt type. The second impulse directed to the printingmagnet effects the printing impression by causing the printing member tobe bodily moved against the platen.

The incorporation of the present improvement enables the printingimpulse to be selectively transmitted to the desired lowerdenominational orders for zero printing, such impulse being undercontrol of contact members of the order representing the significantdigit and the next lower order in which zero printing is to beautomatically effected. Hence, in the present arrangement the printingimpulse is concurrently transmitted to those orders in which zeroprinting is to be automatically effected, thereby enabling concurrentprinting of zero digits and the significant digits 1-9.

A still further object of the invention relates, particularly, to theimprovements in the contact making mechanism controlled by the typemembers. In the present embodiment the position of the type carryingmember shifts such contact member to one or two positions, dependingupon whether the related order is to have digit printing l-9 or 0printing. After such setting, a positively operated mechanism shiftssuch contact members in whatever position they may be so as to make firmand positive electrical contact with the associated contact members.This improved mechanism provides for eflicient positive or electricalcontact, eliminating faulty operations which may have occurred byprovision of past electrical contact control mechanisms. In connectionwith the automatic zero elimination, the electrical arrangement is suchthat the printing impulse cannot be directed to orders at the left ofthe .order printing the highest significant digit, due to the positionof the contact member controlled by the related type carrying memher.This breaks the printing impulse circuit for one or more orders to theleft of the significant digit, thus suppressing zero printing.

I Other objects of the invention will be pointed out in the followingdescription and claimsvand illustrated in the accompanying drawings,which disclose, by way of example, the principle of the invention andthe best mode, which has been contemplated, of applying that principle.

The invention is illustrated by way of example in the accompanyingdrawings in which:

Fig. 1 is a sectional view showing one order of the digit printingmechanism with the associated zero printing control.

Fig. 2 is a view in front elevation taken on the line 2-2 of Fig. 1.

Figs. 3 and 4 are both detail views showing the operating mechanism forcertain parts of the machine.

Fig. 5 is a view in side elevation showing certain operating cams andassociated devices operated thereby.

Fig. 6 is a timing diagram of the machine illustrating the timing ofmechanical and electrical parts associated with the present-invention.

F g. 7 is a wiring diagram of the electrical instrumentalities involvedin the present invention.

Printing mechanism The machine in which the present improvements areincorporated also includes an alphabetic printing mechanism with meansfor selecting letters making up words or abbreviations. The alphabeticprinting mechanism is fully. shown and described in the patent to F. L.Fuller and H, S. Beattie, No. 2,199,561, dated May 7, 1940, andapplication of T. J. Watson et 8.1., Berlal No. 494,820, filed July 15,1943.

Since the present invention relates only to the numeral printingmechanism, it is explained that the printing wheel 60 carries thealphabet type and has interspersed numeral printing type for printingthe digits 1-9 and 0. Under control of the perforations in the cardcolumn, these numeral type will be selected for printing the digits andprinting is eifected at the N point in the machine cycle to concurrentlyeffect printing from the selected digits 1-9 and the digit whererequired.

The card is perforated with holes to represent the digits 0-9 and ispassed by the analyzing brushes 292 (Fig. 'l) by a card feedingmechanism of any suitable design to analyze the index points in theorder 9, 8, '7 1;0, X, it.

When the analyzing brush senses a hole at any of the index pointpositions 9-1, a circuit is closed to the printing control magnet 8i(Fig. 1) and for each card column analyzed there is a printing controlmagnet 6i. When a printing control magnet ii is energized its armature82 (Fig. 1) is attracted to pull a call wire 83 which rocks a bell crank64. Pivoted to the bell crank 84 is a T-shaped member 85 and its headportion is provided with projections 08R. and "L, the extension 68Rnormally engaging an extension of a clutch release arm 61. Theengagement of extension 86R and the clutch release arm 81 is retained inthe relationship shown in Fig. 1 during the time the holes 9, 8, "I, 6,5, 4, 3, 2 and 1 are analyzed to thereby cause the clutch release arm 61to be rocked at a diflerential time when magnet 8 l is energized.

Shaft 11, it will be seen from Fig. 6, is driven at a uniform speedduring the time the index point positions 9-1 are analyzed and hassecured thereto a tube It which is fluted transversel along itsperiphery So as to provide clutch notches 69. Tube 68 constitutes thedriving clutch member. Encircling the clutch tube 08 are gears I0, therebeing one gear 10 for each order of the printing mechanism. To providefor the lateral spacing between the gears ID the gears are guided byslots H and 12 formed in a casting 13 as well as by guide slots 14 in acasting II. By such spacing members the gears III are separated to allowindependent movement and also to cause a clutch pawl 16 which i pivotedon the related gear III to cooperate with the clutch release arm 61. Theclutch release arm 61 normally holds the clutch pawl 16 in such positionthat its clutch tooth TI is out of engagement with any of the clutchnotches 69 of the clutch tube 08. When the clutch release arm I1 isrocked as a result of the first energization of the magnet il, theclutch is engaged because a spring 18 attached to the clutch pawl i=8will rock the latter in order that the clutch tooth 11 will engage theclutch notch 69 determined by the time the printing control magnet 6| isenergized. The above described clutch is the printing type selectingclutch and causes the diiferential rotation of the printing wheel II. Torotate the typ wheel 80, the gear ll meshes with an idler gear I!loosely mounted on a shaft 80 and the gear 19 meshes with the typecarrying gear wheel carrying the digit and alphabet printing type.

Fig. 1 shows the arrangement of the printing devices for a single orderand the machine is preferably provided with duplicate devices forprinting a plurality of characters. (See Fig, 2.) If the 9 hole. wasanalyzed the clutch tube 68 would rotate the extent of one notch beforethe clutch engagement is effected by the energization of the printingcontrol magnet ll. With the clutch retained engaged the printing. wheel80 will thereafter continue to rotate. The differential time at whichthe printing control magnet BI is initially energized determines theextent of counterclockwise rotation of the printing wheel it necessaryto select a digit type. After the variable rotation of the printingwheel 60 has been effected and the printing impression effected, withthe clutch still engaged the printing wheel 80 will continue to rotateuntil the free end of clutch pawl 15 strikes the clutch release arm 61which, in the meantime, has been brought to its normal position. Whensuch disengagement is effected the printing wheel 60 is at the normalposition shown in Fig. 1.

Each printing wheel 60 is carried by an arm 8i loosely pivoted on theshaft 80 and provided with a rearwardly extending follower arm 82 whichis operated by a cam projection 88 of a cam disk 85 which constitutes adriven member of a printing clutch.

Shaft 35 rotates a clutch tube 84 fixed thereto and which is similar tothe clutch tube 88 and likewise encircling the clutch tube 84 is thedriven clutch disk 85 upon which is pivotally mounted a clutch pawl 86.Associated with the clutch pawl 86 is a clutch release arm 81. When theclutch engagement is effected between the clutch pawl 86 and the Nclutch notch of the clutch tube 84, the disk 85 will be rotated. in acounterclockwise direction whereby the cam projection 83 will cooperatewith the follower arm '2 to rock arm 81 about the shaft 80 to effect thedigit printing impression. The engagement of the clutch now beingdescribed is eflected at the N printing time in the cycle forconcurrently printing selected digits 1-9 and 0.

The T-shaped members BI are guided between guide plates 88 and saidguide plates are carried by a pair of arms 89 loosely pivoted upon shaftI! to form a bail to shift T-shaped members 65. After all of the indexpoints 9-1 have been analyzed and by means to be subsequently described,the bail comprising the side arms 89 and transverse plates 88 is rockedcounterclockwise about the shaft I 5, first positioning the T-shapedmember so that extensions 88R, 66L overlap both the clutch release arm61 and clutch release arm 81. Further movement to the left issubsequently effected so that the extension 66L will .be engaged withthe clutch release arm 81 and completely disengaged from the clutchrelease arm 61.

When the printing clutch engagement has been effected each cam 83 willcooperate with the related follower arm 8! to rock the associatedprinting arm to force the printing wheel 60 against the usual inkingribbon and platen 9i around which platen is positioned a paper strip tobe imprinted. As each arm 80 is rocked, the printing wheel 60 is beingrotated counterclockwise but since the printing wheel is now rollingover the gear I9 this rolling action will cause an equal andsimultaneous rotation in a clockwise direction. Both'of these oppositerotations will, in effect cause the printing wheel 60 to be immobilewith respect to its rotation when it moves to the right to strike theplaten 9|, the type striking the platen squarely and firmly to cause alegible impression.

After the printing operation, since the type selecting clutch is stillengaged, the printing wheel 60 continues to rotate as previously stateduntil the clutch pawl'IB strikes the clutch release arm 61 which, in themeantime, has been positioned to normal, thereby disengaging the typeselecting clutch when the printing wheels are at normal position.

The clutch which causes the rotation of the cam disk 85 to effect theimprint continues its engagement for a complete rotation of the cam 85and the clutch disengagement is effected by the engagement of theclutch. pawl 86 with the clutch release arm 81. V

It has been found in practice that when the disengagement of the pawl I6for the type selecting clutch is effected 'by striking the clutchrelease arm 61, there was a tendency of the clutch pawl I6 to rockclockwise about its pivotal point, unduly stretching the associatedspring 18. To

prevent this action, a cushioning arrangement is provided to hold theclutch pawl I6. In a preferred arrangement this constitutes for eachtype selecting clutch a double arm 92. One arm cooperates with a camportion 93 of the clutch pawl I6 and the other arm bears against aspring pressed plunger 94 inserted in apertures 95 partially filled withoil. As the clutch pawl I6 comes around to its normal position, it willstrike the clutch release arm 61, forcing its clutch tooth 11 out of theclutch tooth 69 it previously engaged and the cam portion 93 of theclutch pawl I6 will strike one arm of the double arm 92, forcing theopposite end downwardly to press the plunger 94. This will compress theoil at the bottom of the recess 95, thus providing a cushioning actionon the arm 92 to restrain the clutch pawl 16 so that it cannot move toofar outwardly.

In order to retain the cam disks 85 at their normal position and also toprevent rebound, associated with each cam disk 85 is a springpressed'detent 96.

Reference has been made to the bail which comprises the guide plates 88and the sidearms 89 and which bail is loosely pivoted on the shaft I5and is rocked about such shaft to position the T-shaped interposers 65.Secured to a shaft I is a pair of arms IOI which carry a transverse bailbar I02 directly underlying the series of clutch release arms 81 tonormally lock them against accidental movement. One arm IOI has a linkconnection I03 to an extension I04 of one of the arms 89. The means forreciprocating the rock shaft I00 is shown in Fig. 5 and it will be seenthat secured to a rod I05 is a follower arm I06 carrying a roller I01cooperating with a profile cam I08 secured to a drive shaft I5. A springI09 attached to an extension of the follower arm I06, urges the rollerI01 against the cooperating cam I08. Attached to the rod I05 is an armIIO connected by a link III to an arm II 2 secured to the rock shaft I00.

During the time that the 9-1 index points are being analyzed, the partsnow being described and shown in Fig. 1 are retained in thepositionshown and bail rod I02 will underlie the clutch release arms 81.After the 1 index point position has been analyzed, roller I01 drops toa low part I08a of the cam I08, rocking the shaft I08 clockwise and thearm IIO connected thereto in the same direction, forcing the link II Iupwardly to rock the arm II 2 and the shaft I 00 in a clockwisedirection. This will move ball I02 below the clutch release arms 81 tounlock themand by drawing the link I03 to the left it will be observedthat the bail for shifting the T-shaped interposer will be movedslightly to the left so that extension 66L now cooperates with therelated clutch release arm 81, nevertheless retaining the positioning ofthe extension 66R over the extension of the related clutch release arm01. Having moved the interposers 65 in such position the formation ofthe cam part IBM is such that the interposers will remain in thisposition during the analysis of the 0 and X'index point positions. (Seetiming diagram-Fig. 6.)

After the 9-1 index point positions have been analyzed and the firstimpulses have been directed to the printing control magnets BI it isdesirable that their armatures 62 be positively retracted from the coresof the magnets in the event that residual magnetism retains theattraction. To this end, there is loosely pivoted upon the shaft I5 abail II3 underlying the bell cranks 64. One of the side arms IOI and oneof the side arms of the bail II3 are interconnected by a toggleconnection which consists of an extension II I of a related arm IM and alink I I5 pivoted to an arm of the bail II3, said members Ill and H5being interconnected by a pivot rod II6. Members II 4 and H5 at theirjuncture II6 provide a toggle system. When the clockwise movement isgiven to the bail I02 to shift the T-shaped interposers 65 after theanalysis of the 9-1 index points it will be observed that during thisclockwise movement the toggle system passes through and beyond itsmidcenter position. In passing from the normal offcenter position to theother offcenter position of the toggle system, the bail II3 will bereciprocated, thereby rocking the bell cranks 64 and through the callwires 63 positively retracting the armatures 62 if they should remainattracted to the cores of the related magnets. Hence, means is providedto positively retract the armatures, insuring that the next impulsedirected to the printing control magnet GI will have-the proper effect.When the toggle system is in the other offcenter position the bail II3will be in a position shown in Fig. 1, permitting the rocking of thebell cranks 64 by the second impulse directed to the related printingcontrol magnet 8|.

After the analysis of the X index point position, cam I08 is effectiveby a still lower cam part I08b (Fig. 5) to causea still furtherclockwise rotation of the shaft I00, and by pulling link I03 (Fig. 1) tothe left still further it will be seen that the bail plates 88 shift theinterposers 65 so that the extensions 66B are now completely disengagedfrom the clutch release arms 61, nevertheless retaining the extensions68L over the clutch release arms 81. This position is maintained duringthe analysis of the R index point position and also at the time that anelectrical impulse is sent by a cam controlled contact at the N impulsetime and which from the timing diagram (Fig. 6) is initiated at about225 of the machine cycle. Hence, the clutch release arms 81 will beoperated when the printing control magnets 6| are energized at theN'point in the machine cycle.

It isdesirable, of course, that the clutch release arms 31be:-positively retracted to their normal positions tobe in a position todisengage the printing clutches. This is effected after the N impulsetransmission time bymeans of the bail I02 when it is returned to normal.By means of the operation of the cam part I03c (Fig. 5). on the followerarm I06 shaft I is rocked counterclockwise and ball I02 will rock theclutch release arms 31 to normal position if they have not been moved tosuch position by their associated springs. When bail I02 is restored tonormal the toggle system II4I I6 again passes through midcenter toreciprocate-bail I II to positively retract armatures 62.

link connection I25 to an arm I26 secured to the rock shaft'I22.

From the timing diagram (Fig. 6) it will be seen that for the timing ofbail I20 at the initial part of the cycle the cam I23 enables, throughthe operating connections to the shaft I22, the

rocking of the shaft I22 counterclockwise to draw bail I20 downwardly,releasing the clutch release arm 61 for operation during the analysis ofthe index point positions 9-1, 0 and X. After the analysis of thex indexpoint position and when the interposers 65 have been moved fully to theleft so that their extensions 66R are disengaged from the clutch releasearms 61, the cam I23 is effective through the operating connectionsshown in Fig. to rock the shaft I22 clockwise, moving the bail Iupwardly and by coaction with the clutch release arms 61 moving thelatter to their normal positions.

1-9 digit printing control Referring to Fig. 1, each gear 13 is providedwith a flange portion I30 formed to provide a cam portion I3Icooperating with one arm of a double arm I32 pivoted at I33. Whenever aprinting wheel is rotated to select any numeral 1-9 for printing, therotation of the associated gear 19 clockwise will rock the arm I32 in asimilar direction. A contact carrying member I34 is bifurcated at'itsupper end to receive a headed stud I35 carried at one endof the doublearm I32. A spring I36 is interposed between said arm and an extension ofthe contact carrying member I34. The contact carrying member carriesplates I31 of insulating material and since these are attached to eachside of he member I34 they are spaced so as to receive a metalliccontact member I33 which is pivoted at I33 between the insulating.plates I31. Whenever a printing wheel 60 is variably rotated to selectone of the digits 1-9, the rocking of the double arm I32 clockwise will,through the spring I36, elevate the related contact carrying member I34so that the contact member I33 is now coordinated with contact blocksI40 and I but spaced therefrom. During such movement the lower portionof the contact carrying member I34 moves 'out of engagement with a zeroprinting bail I42 but retains an operative engagement with the numericprinting bail I43.

By circuit connections to be subsequentl described at 225 of the machinecycle or at the N time, an electrical impulse is directed by camcontrolled contacts and at this time ball I43 has moved to the left tocause the contact member I33 to shunt the contact plates I40, I4I.Hence, through contact plates I40, I and contact member I33, the Nimpulse is directed to the printing control magnet 3| and at this timein the machine cycle each interposer 65 has been shifted so that onlyextension 66L is in cooperation with the clutch release arm 31.engagement between the clutch pawl 86 and the N notch of the clutch tube34, causing the rocking of the printing arms 3I so that the selectednumeral type 1-9 are thereafter impressed against the platen 9| in themanner previously described.

It is understood, therefore, that for printing the numerals 1-9 printingoperations are made after all the perforations are analyzed and at asingle point in the operating cycle.

The means for rocking the bail I43 to cause the elevated contactcarrying members I34 to be rocked so that their contact plates I33 makecontact with the contact plates I40 and HI to transmit the N impulse tothe printing control magnets 6I will now be explained. The numericalprinting bail I43, as shown in Fig.2, is carried by a pair of arms I44secured to a rock shaft I45. At one end of the rock shaft there isattached an arm I46 also shown in Fig. 3. -A follower arm I41 which ispivoted on a rod I48ha's-a link connection I43 to the arm I46 and saidfollower arm I41 cooperates with a profile cam I50 driven by a driveshaft I3.

Understanding that the elevated contact carrying members I34 onlycooperate with the bail I43 under the conditions now assumed, cam I50will be effective through the operating train shown in Fig. 3 to rockthe shaft I45 counterclockwisefthereby urging the bail I43 to the leftas shown in Fig. 1. This will force the contact carrying members I34 tothe left so that their contact members I38 make firm electrical contactwith the contact plates I40 and HI. As contact member I38 strikescontact plates I 40, I, bail I42 will rock the contact carrying memberI34 about the pivot I39 to stretch spring I36 permitted because stud I35is smaller than the bifurcation in arm I32. Tensioned spring I36 willurge contact member I33 firmly against contact plates I40, I.

From the timing diagram (Fig. 6) it will be seen that for the timingofbail I43 the cam I50 is effective to rock the bail I43 to make thedesired electrical contact at 218 of the machine cycle. Such electricalcontact is retained during the time that the N electrical impulse isdirected at 225 of the machine cycle. After the impulse has beendirected, the bail I43 is restored to the right to its normal positionand, ofcourse, after the gears 13 come to their normal position, shownin Fig. 1, the contact carrying members I34 are restored to normal, asshown in this figure.

Zero printing In printing multidenominational numbers such as 309 or300, it is necessary to insert the intermediate zero or any zeros to theright of the highest significant figure. In designation of numbers in afield comprising a plurality of card columns, if the number of digits isless than the This will effect the number or card columns, zeros areperforated at the left or the highest significant digit. It isundesirable that such zeros be printed and by the zero printingmechanism, the printing of such zeros from the controlling card columnsis suppressed and only the intermediate zeros, or zeros to the right ofthe first significant digit, are printed. v g

In selecting the zero type on the printing wheel 80 for printingintermediate zeros or zeros at the right, the type selecting clutch isnot engaged and only the printing clutch is engaged to rock the printingwheel carrying arms 80 so that rolling of the type wheel 60 over the nowstationary gear 19 will bring the zero type to the printing line andimpressed against the platen 9|. As will be more clearly described lateron when the operation of the machine is described in connection with thewiring diagram, the cam operated contact which controls the impulsesdirected to the printing control magnets under control of the analyzingdevices does not close at the zero index point position when the machineis plugged up for'numeric printing. Hence, since such impulses are notdirected to the printing control magnets 6| the holes in any of thecontrolling columns are ineffective and obviously for card columns abovethe highest significant digit such 0 holes are ineffective and zeroprinting will be suppressed for corresponding orders.

For zero printing of intermediate zeros and zeros to the right of thefirst significant digit, bail I42 is effective to prepare an electricalcircuit for causing the energization of the printing control magnet 6iand the engagement of the printing clutch. The ball I42, as shown inFigs. 1 and 2, is carried by a sleeve I55 loosely mounted on shaft I45and integral with the bail I42 is a yoke or cross-over bail I56 to whichis secured an arm I51, loosely mounted on the shaft I45.

Referring to Fig. 4 it will be seen that a follower arm I58 pivoted onstud I48 has a link connectionI6I to the arm I51. The follower arm I58cooperates with a profile cam I60 driven by the shaft I3.

It will be observed that in the counterclockwise rotation of cam I60th'e follower arm I58 will be rocked to rock the shaft I45counterclockwise through the operating train. This will result in thecounterclockwise rotation of the bail I42 and since, at this time, thecontact carrying members I34 for those orders in which zero printingisto be effected are at the normal position in Fig. l, movement of thebail I42 to the left will cause at about 184 (see timing diagram, Fig.6) contact between the contact members I38 and the contact plates I45and I62. The cam I60 maintains such contactas shown in the timingdiagram (Fig. 6) at the time that the N electrical impulse istransmitted. This impulse is transmitted by the contact plates MI andI62 now shunted by the associated contact member I38 and is transmittedto the printing control magnets 6| associated with the card columns inwhich zero printing is to be effected. At this time the extensions 66Lof the T-shaped interposers 65 are in operative engagement with only theclutch release arms 81 and the rocking of such clutch release arms 81will engage the printing clutch, causing the cam disks 85 to rock thetype wheel carrying arms, thus causing the printing wheel60 to roll overthe printing gears and strike th'eplaten 9|, the zero type on suchwheels being selected thereby for zero digit printing.

Gin-tat description The operation of the machine as it involves thelisting or printing of items will now be described in connection withthe circuit diagram shown in Fig. 7. Listing or printing of items iseffected when the cardpasses by the LB analyzing brushes 292. Of course,there is an analyzing brush for each card column and the particularanalyzing brushes which are tocontrol the listing of items have plugconnections 360 and are from the corresponding plug sockets to plugsockets 362 to the denominational orders utilized for listing. It willbe noted that each of the plug sockets 362 has a wire connection to theupper contact blade 363, and the lower contact blade 364 has a wireconnection 365 to the related printing control magnet 6|. For each orderthe position of contacts 363, 364 is controlled by a related cam 36!driven by a shaft which is rotated synchronously with card feed and theCF and CR. cam contacts. The profile of each cam 361 i so arranged thatduring the time the 9-1 index point positions are analyzed the blade 364will make electrical contact with the uppermost contact blade 363.During the time the 9-1 index positions are being analyzed, a circuit isclosed from the line 3 I 0 through circuit breaker contacts CRI, throughthe CF! circuit breaker contacts driven by a shaft rotating during cardfeeding operations and to the contact roll associated with the LBanalyzing brushes. The impulses then are directed by analyzing brushes292 when they encounter perforations, thence through the plugconnections 360, to the plug sockets 362, thence through contact blades363, 364 and wire 365 to the print control magnet 6 I. This impulse willinitiate the rotation of the printing wheel and at the time the typeselecting clutch is engaged the printing wheel 60 will be rotated tobring a'selected digit type to the printing point.

It will be recalled that for item listing operations a supplementalimpulse is directed to the printing control magnets 6I at the N time inthe machine cycle to cause the engagement of the printing clutches toeffect printing from the selected digit type. This circuit extends fromline 3I0, cam contacts CR26 to plug socket 394. A plug connection 395 ismade between plug socket 394 and one of the plug sockets 396. For theparticular denominational columns utilized for printing, plugconnections 391 are made to interconnect the plug sockets 396 to therebytransmit the common impulse from the (3R25 contacts to all of thecontact bars I40. For each denominational order that a digit 1-9inclusive is to be printed the contact bar I38 will be in such movedposition that it will shunt contacts I40 and MI, thereby transmittingthe impulse from cam contacts CR25 through I40, I38, I to the relatedprint control magnet 6|.

Zero elimination and zero insertion mechanism .If zeros are to beinserted for' intermediate orders, or successive zeros to the right ofthe first significant digit, this will be effected by the followingcircult: Referring to Fig. 1, it will be recalled that for zerorepresenting orders to the right of the first significant digit thecontact bars I38 are in the position shown in Fig. l, d in the circuitdiagram of Fig. 'Iwlien the zero print bail I44 moves to the leftcontact points I and I62 will be electrically sh'unted by the contactbar I38. Assuming that the amount 4,000 is to be printed, the contactbar I38 related to the thousands order wlll be in position to shuntelectrical contacts I" and Ill and accordingly the impulse directed bycam contacts CR2! will be transmitted through such contacts I40, I now.shunted by trol-magnet GI. In the same manner, by other. plugconnections 399 for the next lower orders it will be seen that'the sameimpulse is transmitted by a similar circuit to the print control magnets6| for tens and units orders. This N impulse transmitted to the printcontrol magnets for one or more lower orders to the right of the firstsignificant digit will cause zero printing in such orders.

For the one or more higher orders which are to the leftof the firstsignificant digit, it will be observed that zero printing isautomatically eliminated or suppressed, due to the breaking of the zerocircuit for such higher orders by the shifting of the contact bar I38 inthe order representing the first significant digit. Since the contactsIll and I62 in this first significant digit order are not bridged by thecontact bar I38 the impulse from the CR25 contacts cannot be directed tothe print control magnets for one or more such higher orders. Hence,since their printing control clutches will not be engaged the relatedprinting wheel 60 will not be impressed against the platen 9I and zeroprinting is suppressed.

By the provision of the present arrangement, it will be observed thatthe printing control magnets 6I have a triple function. They initiallyfunction during the analysis of the card to select the desired digittype for printing; the'second impulse directed to the magnet GI eifectsprinting from the selected digit type; and third, other printing controlmagnets receive the N impulse for the first time at the N time in themachine cycle to impress the printing wheels in orders below that of thefirst significant digit to print the intermediate zeros. The absence ofthe transmission of such impulse to the print control magnets of ordersto the left of the first significant digit enables the related printingwheel 60 to remain at normal position to enable zero suppression orelimination.

While there have been shown and described and pointed out thefundamental novel features of the invention as applied to a singlemodification, it will be understood that various omissions andsubstitutions and changes in the form and details of the deviceillustrated and in its operation may be made by those skilled in the artwithout departing from the spirit of the invention. It is the intention,therefore, to be limited only as indicated by the scope of the followingclaims.

What is claimed is:

1. In a record controlled machine, record analyzing means, a pluralityof denominationaliy ordered type carrying members, each with a pluralityof digit type 1-9 and a type. an individual electromagnetic device foreach order to select the digit type 1-9, and for effecting printingimpressions from the digit type 1-9 and 0,

. a circuit for each electromagnetic device controlled by the analyzingmeans to energize the related electromagnetic device the first time toeffect the selection of the digits 1-9, a printing "latter a second timeto effect concurrent printing from selected digit type 1-9, an auxiliarycircuit for each electromagnetic device of each lower order to cause theimprint from the 0 type of next lower order, and means controlled by thetype carrying member of a lower order when at the 0 digit position andby the type carrying member of the next higher order when at any of the1-9 digit positions to connect said printing impulse circuit to theauxiliary circuit of the electromagnetic device of said lower order toenergize the latter at said second time to concurrently eflect 0 digitprinting in such lower order with printing from digit type 1-9 in otherorders.

2. In a record controlled machine in which a type carrying membercarrying digit type 1-9 and 0 is differentially moved to select the 1-9type and is at a position to normally print 0, the combination ofprinting means for each order to bodily move said printing member at itsdifferential position to printing position to print from selected type,an electromagnetic control means for each order to cause the operationof the related printing means, a printing impulse circuit common to theelectromagnetic devices of all orders to concurrently energize thelatter to concurrently effect the operation of the printing means of allorders to print selected digits 1-9, an auxiliary circuit for each lowerorder to energize the electromagnetic device of such lower order tocause the imprint from the 0 type of next lower order, and meanscontrolled conjointiy by a type carrying member at the digit positions1-9 and the type carrying 'member of next lower order when unmoved andat the 0 digit position for connecting the printing impulse circuit tothe auxiliary circuit of the electromagnetic device of said lower orderto energize the latter to cause the operation of the printing means forsaid lower order to print the 0 digit concurrently with the 1-9 digitsof higher orders.

3. In a record controlled machine for printing from selected digit type1-9 and 0, a. plurality of denominationally ordered differentiallymovable type carrying members carrying digit type 1-9, and 0, a contactmaking member controlled by the related type carrying member and havingone non-contact making position when the related member is at digitpositions 1-9, and having another non-contact making position when atthe 0 digit position, a timed printing impulse circuit to effectprinting from 0 type and from the selected digit type 1-9, an auxiliary0 printing control circuit completed conjointly through a contact memberof higher order when moved from the first named non-contact makingposition to contact making position and a contact member of next lowerorder when moved from said other non-contact making position to contactmaking position, and means for moving said contact members to contactmaking positions to connect said printing impulse circuit through acontact member of higher order and a contact member of next lower orderto cause 0 printing from the type member of next lower order.

4. In a record controlled machine for printing from selected digit typel-9 and 0, a plurality of differentially movable type carrying memberscarrying digit type 1-9, and 0, a contact member controlledby therelated type carrying member moved to one non-contact making positionwhen the related member is at digit positions 1-9, and

moved from the first namednon-contact mak-' ing position to contactmaking position and a contact member of next lower order'when m'oved-from.-its= nrmal non-contact making position to contactmaking-position, and means for moving said contact-members of higher andlower 'or-.' der's to contact making positions to connect said jprintingimpulse circuit through a contact member of higher order and acontact member of next'lower order to cause 0 printing from the typemember of next lower order.-

o 5. The circuit arrangement according to claim 4 in which the movementof t e contact member or the order at the extreme left in" which asignifi'cant digit 1-9 is printed to said contact making positiondisconnects the printing impulse circuit'from the contact member of nexthigher order when the latter is at said normal but contact makingposition, thereby suppressing 0 print-- ing for orders to the left ofsaid significant digit. 6. In arecord'controlled machin for printingfrom selected digit type 1-9 and 0, a plurality of differentiallymovable type carrying members contact making position and concurrentlywith the time the impulse of the printing circuit is transmitted.

"I. In a record controlled machine, record analyzing means, a pluralityof denominationally ordered typecarrying members having digit type l-9and 0, an electromagnetic device for each order, means under control orsaid record analyzing means to energize said electromagnetic device ofthe related order a first time to select a digit type 1-9, means toeffect printing from digit type 1-9 and 0, a printing impulse circuitcommon to the electromagnetic devices of all orders to concurrentlyenergize the latter a second time to cause said electromagnetic deviceto operate said printing means to effect printing of selected digit type1-9, an auxiliary circuit for each lower order type carrying member tocause the energization of the related electromagnetic device, and

means controlled by the type carrying member of a lower order when atthe 0 digit position and by the type carrying member of the next higherorder when at any of the 1-9 digit positions to connect said printingimpulse circuit to the auxiliary circuit of the electromagnetic deviceof said lower order to energize the latter at Said second time tooperate the related ordered printing means carry digit type 1-9, and 0,a contact member having one non-contact making position when the relatedmember is at digit positions 1-9, and

having another normal non-contact making position when at 0 digitposition, a timed printing -impu1se circuit to effect printing from theselected digit type 1-9, and 0, said circuit being completed throughsaid contact members when moved to contact making position from thefirst named position, and said printing impulse circuit being completedconjointly under control of a contact member of higher order when movedto contact making position from theilrst named non-contact makingposition and a contact member of next lower order when moved to contactmaking position from the second named nonsociated only with the contactmembersat the first named non-contact making position, means for firstmoving the bail associated with the contact members at normal positionto cause] them to assume contact making positions, and 'other means forthereafter moving the other 'bail to moved by the related type carryingmembe'rand to print 0 concurrently with printing from digit type 1-9 inother orders. 1

8. In a record controlled machine, record analyzing means, a pluralityof denominationally ordered type carrying members having digit type l-9and 0, means for positioning a type member to select a digit type 1-9,an electromagnetic device for each order, means under control of saidrecord analyzing means to energize said electromagnetic device of therelated order a first time to control said positioning means to select adigit type l-9, means to efiect printing from digit type 1-9 and 0, aprinting impulse circuit common to the electromagnetic devices of allorders to concurrently energize the latter a second time to cause saidelectromagnetic device to operate said printing means to effect printingof selected digit type 1-9, an auxiliary circuit for each lower ordertype carrying member to cause the energization of the relatedelectromagnetic device, and means controlled by the type carrying memberof a lower order which at the 0 digit positionand by the type carryingmember of the next higher order when at any of the 1-9 digit positionsto connect said printing impulse circuit to the auxiliary circuit or theelectromagnetic device or said lower order to energize the latter atsaid second time to operate the related ordered printing means to print0 concurrently with printing from digit type 1-9 in other orders.

' HORACE S. BEA'I'I'IE.

CERTIFICATE OF CORRECTION.

. Patent No 2,381,862, August m, 1 4

HORACE S. BEATTIE.

It is: hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page 7,first column, line 52, claim 6, after the word "making" strike out"normal" and insert the same after "at", line 51, same claimyandsecondcolumn, line #9, for "'which" read --when--; and that the saidLetters Patent should be of the case in the Patent Office.

Signed and sealed this "11th day of December, A. D. 19145.

, Leslie Frazer (Seal) First Assistant Commissioner of Patents.

